Sitting support for a bath tub



FIG. 1 is an plan top view of the sitting support for a bath tub, showing our new design;

FIG. 2 is an plan bottom view of the design of FIG. 1;

FIG. 3 is an elevational left hand view;

FIG. 4 is an elevational right hand view;

FIG. 5 is an elevational front view; and,

FIG. 6 is an elevational view, showing the back side of our new design. 

The ornamental design for a sitting support for a bath tub, as shown. 